Looking at the output of jstack  I  see 7 blocks of 

"ajp-bio-8009-exec-224" daemon prio=10 tid=0x00007f159c9ad000 nid=0x5076 
runnable [0x00007f14a3343000]
   java.lang.Thread.State: RUNNABLE

….
        at org.apache.solr.client.solrj.SolrServer.add(SolrServer.java:102)
        at org.dspace.statistics.SolrLogger.postView(SolrLogger.java:229)
        at 
org.dspace.statistics.SolrLoggerUsageEventListener.receiveEvent(SolrLoggerUsageEventListener.java:42)
        at 
org.dspace.services.events.SystemEventService.fireLocalEvent(SystemEventService.java:144)
        at 
org.dspace.services.events.SystemEventService.fireEvent(SystemEventService.java:86)
        at 
org.dspace.app.webui.servlet.BitstreamServlet.doDSGet(BitstreamServlet.java:116)
        at 
org.dspace.app.webui.servlet.DSpaceServlet.processRequest(DSpaceServlet.java:130)
        at 
org.dspace.app.webui.servlet.DSpaceServlet.doGet(DSpaceServlet.java:75)
...
        at 
org.dspace.utils.servlet.DSpaceWebappServletFilter.doFilter(DSpaceWebappServletFilter.java:78)

….


Theses are the only dspace related entries in the stack dump 

Looking at the Solr Admin UI I see 
JVM 35% full                            351.18 MB       of      989.88 MB
Physical Mem 95.8%              1.72GB          of  1.79GB   

The JVM args shown in the solr admin UI are 
-Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager
-Djava.util.logging.config.file=/usr/share/tomcat/conf/logging.properties
-Djava.io.tmpdir=/var/cache/tomcat/temp
-Djava.endorsed.dirs=
-Dcatalina.home=/usr/share/tomcat
-Dcatalina.base=/usr/share/tomcat
-Dfile.encoding=UTF-8
-XX:MaxPermSize=128M
-Xmx1024M
-Xms1024M

To give you a sense of the solr index; running a du -hm on the /dspace/solr dir 
I get 
du -s -hm  solr
3495    solr
So that is about 5.5GB

The stats core has 3579463 docs 
The search core has 70372 docs

I am not sure what solr means with physical memory here 
I probably should increase it - but how ? 

Monika


________________ 
Monika Mevenkamp
mo.me...@gmail.com

http://mo-meven.tumblr.com/
http://mcmprogramming.com/mo.meven/



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